Implementing a pinned left panel with a dynamic panel?!

I'm having trouble pinning down a left panel using the parallax "pinned left" element. Basically followed the online API and used the calculated values based on the text element to the top left corner. Right next to the pinned panel to the left, I have a dynamic panel that expands, and whenever I try to scroll the dynamic panel, the pinned panel moves in the opposite direction.

So far, I've tried changing the values in the On Scroll and in the On Page Load elements, but the simulation still isn't working. Any advice?? Thanks!